120 
Psyche 
[jiine-August 
NOTES ON A NEW ENGLAND ARADID. 
By Geo. W. Barbee. 
Bureau of Entomology; U. S. Dept, of Agriculture. 
Among the species of the very interesting family Aradidce 
that occur in New England is Aradus ^-lineatus Say.* It is not 
uncommon, being found beneath the bark of dead trees, par- 
ticularly old stumps and logs where the fungus on which it feeds 
grows abundantly. On this fungus the eggs are laid and the 
young feed. 
Fig. 1. Aradus 4-lineatus Say. From left to right, adult female, adult male, full-grown 
nymphs. 
The eggs are closely cemented to the fungus and those which 
I have seen, always laid singly, oviposition continuing for some 
time. During 1920 one female in a cage deposited 13 eggs from 
May 16 to June 2 In 1922 eggs were obatined from June 14 to 
June 18. In all, ten eggs hatched in from 16 to 18 days the av- 
erage incubation period being 17.8 days. Six first instar nymphs 
moulted in fron 8 to 13 days, the average length of the first 
instar being 11.1 days. Males that I confined in cages lived 
from 28 to 30 days, females from 14 to 35 days. 
^Determined by H. M. Parshley. 
